const Koa = require('koa');
const app = new Koa();

//设置跨域访问
// app.all('*', function(req, res, next) {
//     res.header("Access-Control-Allow-Origin", "http://localhost:8080");
//     res.header("Access-Control-Allow-Headers", "X-Requested-With");
//     res.header("Access-Control-Allow-Methods","PUT,POST,GET,DELETE,OPTIONS");
//     res.header("X-Powered-By",' 3.2.1')
//     res.header("Content-Type", "application/json;charset=utf-8");
//     next();
// });

app.use(async ctx => {

});

http.createServer(app.callback()).listen(3000);